diff --git a/test/build_ffi.sh b/test/build_ffi.sh
index 7efd9c0..0c7c021 100755
--- a/test/build_ffi.sh
+++ b/test/build_ffi.sh
@@ -13,7 +13,6 @@ codebases=("bhmie-f.zip" "bhmie-c.zip")
 # if bhmie_dir containers bhmie-c/bhmie.so, bhmie-f/bhmie.so, and bhmie-f/bhmie_f77.so then we can skip the build
 bhmie_dir=$1
 if [ -f $bhmie_dir/bhmie-c/bhmie.so ] && [ -f $bhmie_dir/bhmie-f/bhmie.so ] && [ -f $bhmie_dir/bhmie-f/bhmie_f77.so ]; then
-    echo "FFI shared objects already exist. Skipping build."
     exit 0
 fi
 
diff --git a/test/miemfp_tests.jl b/test/miemfp_tests.jl
index 85e3e44..8cab4f7 100644
--- a/test/miemfp_tests.jl
+++ b/test/miemfp_tests.jl
@@ -125,15 +125,26 @@ function FFIWraps.bhmie_c(
     return result
 end
 
-@testset "miemfp" begin
-    @testset "miemfp.bhmie" begin
+@testset "bhmie" begin
+    @testset "Properties vs ffi" begin
         event1, event2 = py"asyncio.Event"(), py"asyncio.Event"()
         event1.set(), event2.set()
         result, output = py"compare_bhmie_functions"(miemfp.bhmie, FFIWraps.bhmie_fortran, event1, event2)
-        @test result
+        TestUtils.@namedtest "Fortran" result
         result, output = py"compare_bhmie_functions"(miemfp.bhmie, FFIWraps.bhmie_fortran77, event1, event2)
-        @test result
+        TestUtils.@namedtest "FORTRAN77" result
         result, output = py"compare_bhmie_functions"(miemfp.bhmie, FFIWraps.bhmie_c, event1, event2)
-        @test result
+        TestUtils.@namedtest "C" result
+    end
+    @testset "Type stability" begin
+        expected_return_type = Tuple{Float64,Float64,Float64,Array{ComplexF64,1},Array{ComplexF64,1}}
+        x = 1.0
+        cxref = 1.0 + 1.0im
+        nang = 2
+        s1 = [1.0 + 1.0im for _ in 1:nang]
+        s2 = [1.0 + 1.0im for _ in 1:nang]
+        out = @inferred(miemfp.bhmie(x, cxref, nang, s1, s2))
+        @test typeof(out) === expected_return_type # Check that inferred type is correct
+        @test out == miemfp.bhmie(x, cxref, nang, s1, s2) # Check that inferred result matches actual result
     end
 end
\ No newline at end of file
diff --git a/test/miemfp_tests.py b/test/miemfp_tests.py
index c2f9c3e..c401eb4 100644
--- a/test/miemfp_tests.py
+++ b/test/miemfp_tests.py
@@ -31,7 +31,7 @@ def compare_bhmie_functions(
     @settings(deadline=None)
     @given(
         # Must be bigger than an atom but still nanoscale
-        x=st.floats(min_value=0.1, max_value=100),
+        x=st.floats(min_value=0.1, max_value=500), # max_value > 500 cannot reliably run on C FFI (may need to remove C check in the future)
         # Refractive indeces must be within a physically reasonable range
         cxref=st.tuples(
             st.floats(min_value=0.1, max_value=4.0),
diff --git a/test/runtests.jl b/test/runtests.jl
index 1a49e25..03c2d50 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -7,7 +7,7 @@ include("../src/nanoconc.jl")
 TestUtils.init_pyenv()
 
 # include("nanoconc_tests.jl")
-TestUtils.singleton_include("miemfp_tests.jl", :miemfp, @__MODULE__)
+@testset "miemfp" include("miemfp_tests.jl")
 # include("quantumcalc_tests.jl")
 TestUtils.singleton_include("benchmarks.jl", :Benchmarks, @__MODULE__)
 
diff --git a/test/testutils.jl b/test/testutils.jl
index 3ac9862..59988e8 100644
--- a/test/testutils.jl
+++ b/test/testutils.jl
@@ -25,6 +25,10 @@ function init_pyenv()
     end
 end
 
+macro namedtest(name, test)
+    esc(:(@testset $name begin @test $test end))
+end
+export namedtest
 
 function fieldvalues(obj)
     [getfield(obj, f) for f in fieldnames(typeof(obj))]